Astronomy
Constellations - Vulpecula - 18 Vul

 
Identification Data
Common Name
ConstellationVulpecula
Star Name18 Vul
Skymap Number20100142
Henry Draper (HD) Number191747
Harvard Revised (HR) Number7711
SAO Number88295
Durchmusterung (DM) NumberBD+26 3815
Washington Double Stars (WDS) Number

Positional Data
Position and Proper Motion (PPM) Number110572
Right Ascension (RA) J200020h 10m 33.536s
Declination (Dec) J2000+26° 54' 15.008"
Position Uncertainty0.0057s
Proper Motion in RA (J2000)/cos(Dec)+0.00137
Proper Motion in Dec (J2000)+0.012966
Radial Velocity-012.0km s-1
Trigonometric Parallax+0.00777s
Trigonometric Parallax Uncertainty0.00065s
GCI Unit Vector in X (J2000)0.480978
GCI Unit Vector in Y (J2000)-0.750936
GCI Unit Vector in Z (J2000)0.452500
Galactic Longitude65.71°
Galactic Latitude
-3.57°
Observational Data
Observed Visual Magnitude (V)5.52
Derived Visual Magnitude
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty0.002
Observed B Magnitude5.60
Observed B-V Colour+0.075
Observed B Magnitude or (B-V) Magnitude Uncertainty0.002
Observed U Magnitude
Observed U-B Colour
Observed U Magnitude or (U-B) Magnitude Uncertainty
Observed Photovisual Magnitude5.5
Observed Photographic Magnitude5.5
Morgan Keenan (MK) Spectral TypeA3III
One-Dimensional Spectral ClassA2
Position Angle
Year of Observation AD

Data Source
SKY2000 - Master Star Catalog - Star Catalog Database, Version 2
    Sande C.B., Warren Jr. W.H., Tracewell D.A., Home A.T., Miller A.C.
    (Goddard Space Flight Center, Flight Dynamics Division (1998))

 
Page compiled: Sun Sep 02 13:15:53 GMT+01:00 2001